webpack.dist.config.js

const path = require("path");
const webpack = require("webpack");
const ExtractTextPlugin = require("extract-text-webpack-plugin");

module.exports = {
  devtool: "cheap-module-source-map",
  entry: "./src/app.js",
  output: {
    path: path.join(__dirname, "dist"),
    filename: "bundle.min.js",
    publicPath: "/static/"
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        loaders: ["babel-loader"]
      },
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          fallback: "style-loader",
          use: "css-loader"
        })
      },
      {
        test: /\.json$/,
        loader: "json-loader"
      },
      {
        test: /\.(jpe?g|png|gif|svg)$/i,
        loaders: [
          "file?hash=sha512&digest=hex&name=[hash].[ext]",
          "image-webpack?bypassOnDebug&optimizationLevel=7&interlaced=false"
        ]
      },
      {
        test: /\.(graphql|gql)$/,
        exclude: /node_modules/,
        loader: 'graphql-tag/loader',
      },
    ]
  },
  plugins: [
    new ExtractTextPlugin("style.css"),
    new webpack.DefinePlugin({
      "process.env": {
        NODE_ENV: JSON.stringify("production")
      }
    })
  ]
};